1. Department of Physics, Fudan University, Shanghai 200433, China
Method to Fulfill Near-field Image and Break the Diffraction Limit
Supervisor: Zhou Lei
Xiao Shiyi
Department of Physics, Fudan University, Shanghai , China
Introduction
Structure & Image(simulation)
Point Source
metallic slab
We demonstrated that a fractal-like slit on a metallic slab can induce both TM & TE SPP.
Furthermore, we find such SPP can realize 2D near field image.
Source Plane
Image Plane
TM & TE SPP
Source
Image
Single point source
without
slab
fractal-like slit on a metallic slab
A-like source
Theory of Image
We know that point source is constituted by plane wave. According to Green’s Function theory if for plane wave, we can fulfill near-field image.
Conclusion
We fulfill 2D near-field image, and find the transmittance of plane wave for each we induce this kind of near-field image.
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[2] J. Gomez Rivas et. al.,Phys. Rev. B 68,
[3] W. Cai et. al., Phys. Rev. B 72, (2005).
[4] T. W. Ebbesen et. al., Nature 391, 667 (1998).
Green’s Function Result